JEGS Champion Series 331 Dual Plane Aluminum Intake Manifolds feature the latest machining techniques to ensure the best quality and results. The process to make these cast aluminum performance intake manifolds yields a lighter, more consistent casting for smoother intake runners, optimal fuel atomization, and improved fuel & air distribution to the cylinders. What does all this mean? MORE POWER!
•Port exit dimensions: 1.04" x 2.03"
•Recommended Intake Gasket: JEGS p/n 555-210003
•Estimated runner length - Shortest: 4.00"
•Estimated runner length - Longest: 6.50"
•Manifold height: (A) 4.13", (B) 5.21"
•May also be used on Vortec or 1995-Earlier blocks with Vortec pattern cylinder heads
•Accepts late model alternator, water neck, AC, and HEI
•No provision for divorced or heated choke
•Stock/stamped steel valve covers may require 3/16" (or thicker) valve cover gaskets. We recommend: 720-168, 720-5867 or 375-1648 for adequate runner clearance.
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